Silence
Still, Quiet
noun, な adjective
If you're lonely and quiet you'll be surrounded in silence.
静寂 is pretty advanced, so you'll mostly only see it used in literature to suggest a sense of profound silence.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
赤ん坊の泣き声が静寂を破った。
The baby’s cry destroyed the silence.